The ATLAS Forward Proton Real-Time Time-of-Flight Trigger and Trigger Decoder for LHC Run 3

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We describe the in-line real time trigger module that provides a majority trigger decision for the ATLAS Forward Proton detector (AFP). A forward proton traverses a sequence of four successive Cherenkov radiators (a “Train”) connected to a fast multi-anode MCP Photomultiplier. Four such trains are m...

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Autor principal: Zich, Jan
Lenguaje:eng
Publicado: 2021
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/2753845
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author Zich, Jan
author_facet Zich, Jan
author_sort Zich, Jan
collection CERN
description We describe the in-line real time trigger module that provides a majority trigger decision for the ATLAS Forward Proton detector (AFP). A forward proton traverses a sequence of four successive Cherenkov radiators (a “Train”) connected to a fast multi-anode MCP Photomultiplier. Four such trains are mounted next to one another and subdivide the AFP acceptance for diffractive protons is “slices” with roughly equal occupancy. Every Train that passes the majority trigger encodes a “bit” in the 5-bit trigger word (the first bit is an “OR” of all trains firing) that is sent over a 220 m foam-core coax cable towards the ATLAS Central Trigger Processor (CTP). The fast real-time Trigger Processor is described, including the trigger decoder that interfaces with the CTP.
id cern-2753845
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
record_format invenio
spelling cern-27538452021-04-26T07:24:00Zhttp://cds.cern.ch/record/2753845engZich, JanThe ATLAS Forward Proton Real-Time Time-of-Flight Trigger and Trigger Decoder for LHC Run 3Particle Physics - ExperimentWe describe the in-line real time trigger module that provides a majority trigger decision for the ATLAS Forward Proton detector (AFP). A forward proton traverses a sequence of four successive Cherenkov radiators (a “Train”) connected to a fast multi-anode MCP Photomultiplier. Four such trains are mounted next to one another and subdivide the AFP acceptance for diffractive protons is “slices” with roughly equal occupancy. Every Train that passes the majority trigger encodes a “bit” in the 5-bit trigger word (the first bit is an “OR” of all trains firing) that is sent over a 220 m foam-core coax cable towards the ATLAS Central Trigger Processor (CTP). The fast real-time Trigger Processor is described, including the trigger decoder that interfaces with the CTP.ATL-DAQ-SLIDE-2021-042oai:cds.cern.ch:27538452021-03-08
spellingShingle Particle Physics - Experiment
Zich, Jan
The ATLAS Forward Proton Real-Time Time-of-Flight Trigger and Trigger Decoder for LHC Run 3
title The ATLAS Forward Proton Real-Time Time-of-Flight Trigger and Trigger Decoder for LHC Run 3
title_full The ATLAS Forward Proton Real-Time Time-of-Flight Trigger and Trigger Decoder for LHC Run 3
title_fullStr The ATLAS Forward Proton Real-Time Time-of-Flight Trigger and Trigger Decoder for LHC Run 3
title_full_unstemmed The ATLAS Forward Proton Real-Time Time-of-Flight Trigger and Trigger Decoder for LHC Run 3
title_short The ATLAS Forward Proton Real-Time Time-of-Flight Trigger and Trigger Decoder for LHC Run 3
title_sort atlas forward proton real-time time-of-flight trigger and trigger decoder for lhc run 3
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2753845
work_keys_str_mv AT zichjan theatlasforwardprotonrealtimetimeofflighttriggerandtriggerdecoderforlhcrun3
AT zichjan atlasforwardprotonrealtimetimeofflighttriggerandtriggerdecoderforlhcrun3

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